MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company

Brake System
NOTE: If one wheel on any driven axle continues to
slip or spin for approximately 4 seconds, this will
cause the anti-lock controller for that axle to go into
the fail-safe mode, and the warning light will give a
shutdown signal.
• In this case, the anti-lock system can be turned back on,
and the warning light extinguished, by turning the key
switch OFF and ON, after the vehicle has been brought
to a full stop. When the key switch is turned back on, the
warning light will illuminate and remain on for 3 to 5 seconds.
This is a built-in function test of the warning light.
Preventive Maintenance
WARNING! Do not attempt to recycle the antilock
system by turning the keyswitch OFF and
ON until the vehicle has been brought to a full
stop and the parking brakes set. Failure to do so
could adversely affect steering and braking control,
and may result in loss of vehicle control and
an injury accident.
WARNING! Do not operate the vehicle in the
event of a malfunction in any air or hydraulic circuit.
Such a malfunction may prevent the brake
system from operating properly, and could
result in an injury accident. The vehicle should
not be operated until the system is repaired and
both braking circuits, including all pneumatic,
hydraulic, and mechanical components are
working properly.
– 162 – PB1318 3/01 Model 330